<!--父级页面：除登录页面以外所有页面的公共部分-->
<template>
  <div style="display: flex">
    <div :style="{width:(isCollapse?'64px':'208px')}">
      <el-menu
          style="width: 100%;height: 100vh;"
          background-color="#3C82F5"
          text-color="#FFF"
          active-text-color="#ff0"
          :collapse="isCollapse"
          :collapse-transition="false"
          router
          unique-opened
      >
        <el-row style="padding-top: 10px;">
          <el-col :span="2"></el-col>
          <el-col :span="7" style="padding-left: 7px">
            <el-avatar src="/imgs/admin/logo.png" style="width: 35px;height: 35px;"></el-avatar>
          </el-col>
          <el-col :span="isCollapse? 0 : 13"
                  style="color:#fff;font-weight: bold;position: relative;top: 8px;left: 2px;">智慧车辆
          </el-col>
        </el-row>
        <el-sub-menu index="1">
          <template #title>
            <el-icon style="font-size: 21px;">
              <User/>
            </el-icon>
            <span>用户管理</span>
          </template>
          <el-menu-item index="/user">用户列表</el-menu-item>
        </el-sub-menu>
        <el-sub-menu index="2">
          <template #title>
            <el-icon style="font-size: 21px;">
              <Van/>
            </el-icon>
            <span>车辆管理</span>
          </template>
          <el-menu-item index="/vehicle">车辆列表</el-menu-item>
        </el-sub-menu>
        <el-sub-menu index="3">
          <template #title>
            <el-icon style="font-size: 21px;">
              <Location/>
            </el-icon>
            <span>电子围栏</span>
          </template>
          <el-menu-item index="/geofence">围栏列表</el-menu-item>
        </el-sub-menu>
        <el-sub-menu index="4">
          <template #title>
            <el-icon style="font-size: 21px;">
              <Place/>
            </el-icon>
            <span>调度管理</span>
          </template>
          <el-menu-item index="/application">申请列表</el-menu-item>
          <el-menu-item index="/audit">调度审核</el-menu-item>
          <el-menu-item index="/distribute">车辆分配</el-menu-item>
        </el-sub-menu>
        <el-sub-menu index="5">
          <template #title>
            <el-icon style="font-size: 21px;">
              <MessageBox/>
            </el-icon>
            <span>数据字典</span>
          </template>
          <el-menu-item index="/dict">字典管理</el-menu-item>
        </el-sub-menu>
      </el-menu>
    </div>
    <div :style="{width:(isCollapse?'calc(100% - 64px)':'calc(100% - 208px)')}">
      <el-header style="height: 10vh;background-color: #fff;padding: 22px 0 0 20px">
        <el-row :gutter="10">
          <el-col :span="18">
            <!--折叠图标-->
            <el-icon @click="changeCollapsed">
              <Expand/>
            </el-icon>
          </el-col>
          <el-col :span="6" style="position: relative;">
            <!-- 登录人姓名含退出登录-->
            <el-dropdown style="position:absolute;right: 20px" trigger="click">
                <span style="font-size: 19px;font-weight: bold">
                  {{ user.username }}
                  <el-icon><arrow-down/></el-icon>
                </span>
              <template #dropdown>
                <el-dropdown-menu>
                  <el-dropdown-item @click="logout">退出登录</el-dropdown-item>
                </el-dropdown-menu>
              </template>
            </el-dropdown>
          </el-col>
        </el-row>
        <!-- 面包屑导航 -->
        <el-breadcrumb separator="/" style="position: relative;top: 20px">
          <el-breadcrumb-item>首页</el-breadcrumb-item>
          <el-breadcrumb-item v-for="item in breadcrumb">{{ item }}</el-breadcrumb-item>
        </el-breadcrumb>
      </el-header>
      <el-main style="height: 90vh;padding: 0;overflow-y: scroll">
        <router-view/>
      </el-main>
    </div>
  </div>
</template>

<script setup>
import {onMounted, ref} from "vue";
import {useRoute, useRouter} from "vue-router";

const isCollapse = ref(false);
const changeCollapsed = () => {
  isCollapse.value = !isCollapse.value
}

const user = ref(getUser());
const logout = () => {
  if (confirm('确定退出登录？')) {
    localStorage.removeItem('user');
    user.value = '';
    window.location.href = '/login';
  }
}
const breadcrumb = ref([]);
let map = {
  '/user': ['用户管理', '用户列表'],
  '/vehicle': ['车辆管理', '车辆列表'],
  '/geofence': ['电子围栏', '围栏列表'],
  '/geofenceMap': ['电子围栏', '新增围栏'],
  '/application': ['调度管理', '用车申请'],
  '/audit': ['调度管理', '用车审批'],
  '/distribute': ['调度管理', '车辆分配'],
  '/dict': ['数据字典', '字典管理'],
  '/dictOption': ['数据字典', '字典管理','字典项管理']
};
//一进入实面立即加载面包屑的值
onMounted(() => {
  updateBreadcrumb(route);
})
// 获取当前路由
const route = useRoute();
// 更新面包屑的方法
const updateBreadcrumb = (route) => {
  const path = route.path;
  breadcrumb.value = map[path];
}
// 获取路由守卫，只要path发生了改变包括哦点击左侧菜单栏，就立即更新面包屑的值
// to 即将要进入的目标路由
// from 当前的路由
// next 放行函数
const router = useRouter();
router.beforeEach((to, from, next) => {
  updateBreadcrumb(to);
  next();
})
</script>